The letter is postmarked on Jan 21st.1) The entire exterior was painted last month and the painter forgot to put the numbers back on.  

What is the exterior surface and the interior surface? 

There are 4 inside concrete piers and unknown number of exterior piers installed around 2 and half sides of house.  

I am soon looking to invest in Austin and not opposed to New Braunfels either.  

The brick exterior was started - all bricks were laid to the top of foundation so the rest needs to completed and the bricks are already on site.

Strive to be a Real Estate Professional as opposed a Sales Professional.

little to no exterior work other than light landscaping. $26/SF = moderate work; ( lengthy uninhabited house, cant be lived in without some minor work at minimum) everything above, plus: complete gut and replace kitchen and bathrooms top to bottom, replace one HVAC component such as AC or furnace. light to moderate amount of drywall patching and replacement. light to moderate electrical and plumbing needed and some new runs. new floors throughout house. replace one of the following; roof, windows or siding. light landscaping and a new deck. $31/SF = heavy work; (typical abandoned/condemned house, heavily vandalized) everything from both categories above, plus: moderate to heavy drywall replacement throughout the house, mold/water damage remediation possibly needed. some walls may need to be moved to correct layout issues. substantial amount of plumbing and electrical need replaced.

My recommendation for you and anyone reading your post is Never (and I stress Never) meet with police or opposing attorney without your own attorney present. 

Alternately, if you have something solid behind it like a stud behind the drywall, you could predrill a couple holes and use a cabinet screw (exterior grade, we use GRK from Home Depot) to gently pull it back against the wall.

The house I grew up in wouldn't cool below 78 when it got really hot, really couldn't go more than 20 degrees below the exterior.